Valve-gear for explosive-engines.



PATENTED DEC. 6, 1904.

C. H. WAY.

VALVE GEAR FOR EXPLOSIVE ENGINES.

APPLICATION FILED DEG-2B, 1903.

N0 MODEL.

Witgesses:

No. 776,708. Patented December 6, 1904.

NITED STATES PATENT OFFICE.

CHARLES H. WAY, OF LANSING, MICHIGAN, ASSIGNOR TO CLARKMOBILE COMPANY, OF LANSING, MICHIGAN.

VALVE-GEAR FOR EXPLOSIVE-ENGINES.

SPECIFICATION forming part of Letters Patent No. 776,708, dated December 6, 1904.

Application filed December 28, 1903. Serial No. 186,866. (No model.)

To whom it y "WY/667%! is connected to the main cylinder when the 5 Be it known that I, CHARLEs I-LWAY, a citimain piston is in its outer position and to the zen of the United States, residing at the city of air when the main piston is in its inner posi- Lansing, in the county of Ingham and State tion. An auxiliary piston C is provided for of Michigan, have invented certain new and the auxiliary chamber. The exhaust-valveG useful Improvements in Valve-Gear for Exis mounted on the piston-rod C of the auxilplosive-Engines, of which the following is a iary piston. The piston C is returned to its specification. initial position by a spring 0, which is ar- This invention relates to improvements in ranged for convenience in the auxiliary cyl- 1o valve'gear for explosive-engines. It relates inder a. This auxiliary cylinder at is preferparticularly to the valve structure thereof. ably provided with an opening or port a, so

The objects of this invention are to provide that the outer face of the auxiliary piston is in a gas or vapor engine an improved exhaustat all times subject to atmospheric pressure. valve-operating means which is simple, com- Then the exhaust-valve C is in its open po- 1 5 pact, and durable and positive and effective sition, the auxiliary chamber (bis connected to in operation. a the inner end of the main cylinder by means Further objects and objects relating to strucof the passage 0 through the valve C and the tural details will definitely appear from the piston-rod C, so that when the valve is open detailed description to follow. the pressure in the auxiliary chamber and in 20 I accomplish the objects of my invention by the main chamber is equalized.

the devices and means described in the follow- In the operation of my improved valve ing specification. structure the charge of explosive mixture is The invention is clearly defined, and pointed drawn into the main cylinder by suction in out in the claims. the usual manner. The second stroke coin- 25 A structure embodying the features of my presses this chargeand the explosion occurs.

invention is clearly illustrated in the accom- This is eifected in the usual or any desired panying drawing, forming apart of this specimanner, the means not being here illustrated, iication, in which the figure is a detail longias they do not form a part of this invention. tudinal sectional view through the cylinder The piston A is forced outwardly by the ex- 30 and the valve attachments thereof of a strucplosion, and when the same reaches its outer ture embodying the features of my invention, position the cylinder-pressure acting upon the position of the valves being shown in full the piston (1 through the port a, which is lines. then uncovered, moves the auxiliary piston In the drawing, A represents the main cylto the position indicated by the dotted lines,

3 5 inder, and A the piston, the piston being thereby opening the exhaust-valve. The reshown in its inner position, its outer position turn stroke of the piston A seals the port a 8 5 being indicated by dotted lines. Suitable inand drives the exhaust from the cylinder.

- let and exhaust ports D and E are provided. During this instroke the exhaust-valve C re- A valve B is provided to control the inlet-port mains open as the pressure in the auxiliary 4 D. The valve B is arranged at one side of the chamber a. and in the main chamber is equalcylinder in asuitable valve-chamber and is reized through the passage 0' in the valve (1 9 tained normally in its seat by a spring B on and the piston-rod (1, as has heretofore been the stem B thereof. The exhaust-valve C is pointed out. The diameter of the valve 0 is arranged in a suitable chamber, preferably on less than that of the piston C, so that there 45 the opposite side of the main cylinder A and is no danger of the valve moving the piston.

is adapted to control the exhaust-portE. An W hen the main piston A reaches the inner auxiliary chamber a is provided, which is conend of its stroke, the port or passage a is unnected to the main chamber by a passage a. covered, which allows the auxiliary chamber The port or passage (0 is so arranged that it a to exhaust, and the exhaustvalve is returned to its seat by the spring 0. It is assisted in this movement by the atmospheric pressure through the port or passage 6, as the tendency of the main piston A is to exhaust the cylinder by suction. However, the spring 0 is entirely effective for the purpose. \V hen the valve O is returned to its seat, the passage 0' is sealed.

The piston A is preferably of such a length that the passage (4 is sealed practically as soon as the outstroke of the piston begins, the object being to keep the passage sealed on the exhauststroke. I am aware, however, that suitable valve attachments might be provided for this purpose. The form illustrated is, however, preferred by me on account of its simplicity. My improved valve structure is very simple and compact in structure and is also very economical to produce. It is also very durable, as the valves are only actuated when it is necessary to properly operate the engine. The cylinder is also very thoroughly cleaned of the exhaust, which is of course of very great advantage in the economical and effective working of the engine.

I desire to remark that I am aware that considerable variation in structural details will readily appear to those skilled in the art to which my invention relates.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inletvalve; an auxiliary cylinder connected to said main cylinder by a passage or port; said passage or port being so arranged that it is connected to said main cylinder When the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston in said auxiliary cylinder; a pistonrod therefor; an exhaust-valve on said pistonrod, of a diameter less than that of said auxiliary piston; a spring for returning said auxiliary piston to its initial position; a passage through said exhaust-valve and piston-rod by which said auxiliary chamber is connected to the main chamber when said exhaustwalve is open, said passage being sealed by the closing of said valve; and a port for said auxiliary cylinder whereby the outer face of said auxiliary piston is subjected to atmospheric pressure, for the purpose specified.

2. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; amain piston; a suitable inletvalve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston in said auxiliary cylinder; a piston-rod therefor; an exhaust-valve on said piston-rod of a diameter less than that of said auxiliary piston; a spring for returning said auxiliary piston to its initial position; and a passage through said exhaust-valve and piston-rod by which said auxiliary chamber is connected to the main chamber when the exhaust-valve is open, said passage being sealed by the closing of said valve, for the purpose specified.

3. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inletvalve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston in said auxiliary cylinder; a piston-rod therefor; an exhaust-valve on said piston-rod of a diameter less than that of said auxiliary piston; a passage through said exhaust-valve and piston-rod by which said auxiliary chamber is connected to the main chamber when said exhaust-valve is open, said passage being sealed by the closing of said valve; and a port for said auxiliary cylinder whereby the outer face of said auxiliary piston is subjected to atmospheric pressure, for the purpose specified.

4. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inletvalve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air When said piston is in its inner position; a piston in said auxiliary cylinder; a pistonrod therefor; an exhaust-valve on said pistonrod of a diameter less than that of said auxiliary piston; a spring for returning said auxiliary piston to its initial position; a passage by which said auxiliary chamber is connected to the inner end of the main chamber when said exhaust-valve is open; and a port for said auxiliary cylinder whereby the outer face of said auxiliary piston is subjected to atmospheric pressure, for the purpose specified.

5. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inletvalve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston in said auxiliary cylinder; a piston-rod therefor; an exhaust-valve on said piston-rod of a diameter less than that of said auxiliary piston; a spring for returning said auxiliary piston to its initial position; a passage by which said auxiliary chamber is connected to the inner end of the main chamber when said exhaust-valve is open, for the purpose specified.

6. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inletvalve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston in said auxiliary cylinder; a pistonrod therefor; an exhaust-valve on said pistonrod of a diameter less than that of said auxiliary piston; a passage by which said auxiliary chamber is connected to the inner end of the main chamber when said exhaust-valve is open; and a port for said auxiliary cylinder whereby the outer face of said auxiliary piston is subjected to atmospheric pressure, for the purpose specified.

7. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaustports; a mainpiston; asuitable inletvalve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; apiston in said auxiliary cylinder; an exhaustvalve of a diameter less than that of said auxiliary piston, adapted to be opened thereby; a spring for returning said auxiliary piston to its initial position; a passage by which said auxiliary chamber is connected to the inner end of the main chamber when said exhaustvalve is open, said passage being sealed by the closing of said valve; and a port for said auxiliary cylinder whereby the outer face of said auxiliary piston is subjected to atmospheric pressure, for the purpose specified.

8. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inletvalve; an auxiliary chamber connected to said main cylinder by apassage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston in said auxiliary cylinder; an exhaustvalve of a diameter less than that of said auxiliary piston, adapted to be opened thereby; a spring for returning said auxiliary piston to its initial position; and a passage by which said auxiliary chamber is connected to the inner end of the main chamber when said exhaust-valve is open, said passage being sealed by the closing of said valve, for the purpose specified.

9. In agas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inletvalve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connccted to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston for said auxiliary cylinder; an exhaust-valve of a diameter less than that of said auxiliary piston, adapted to be opened thereby; a passage by which said auxiliary chamber is connected to the inner end of the main chamber when said exhaust-valve is open, said passage being sealed by the closing of said valve; and a port for said auxiliary cylinder whereby the outer face of said auxiliary piston is subjected to atmospheric pressure, for the purpose specified.

10. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inlet-valve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston in said auxiliary cylinder; an exhaustvalve of a diameter less than that of said auxiliary piston, adapted to be opened thereby; a spring for returning said auxiliary piston to its initial position; a passage by which said auxiliary chamber is connected to the inner end of the main chamber when said exhaustvalve is open; and a port for said auxiliary cylinder whereby the outer face of said auxiliary piston is subjected to atmospheric pressure, for the purpose specified.

11. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inlet-valve; an auxiliary chamber connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in the outer position, and to the outer air when said piston is in its inner position; a piston in said auxiliary cylinder; an exhaustvalve of a diameter less than that of said auxiliary piston, adapted to be opened thereby; a spring for returning said auxiliary piston to its initial position; and a passage by which said auxiliary chamber is connected to the inner end of the main chamber when said exhaust-valve is open, for the purpose specified.

12. In a gas or vapor engine, the combination of a main cylinder having suitable inlet and exhaust ports; a main piston; a suitable inlet-valve; an auxiliary cylinder connected to said main cylinder by a passage or port, said passage or port being so arranged that it is connected to said main cylinder when the main piston is in its outer position, and to the outer air when said piston is in its inner position; a piston for said auxiliary cylinder; an exhaustvalve of a diameter less than that of said auxiliary piston, adapted to be opened thereby; a

passage by which said auxiliary chamber is In witness whereof I have hereunto set my connected to the inner end of the main charnhand and seal in the presence of two Witnesses.

her when said exhaust-valve is open; and a 1 port for said auxiliary cylinder whereby the (JHARLEb WVAY' 5 outer face of said auxiliary piston is subject- NVitnesses:

ed to atmospheric pressure, for the purpose HARRIS E. THOMAS,

specified. WVM. H. NEWHARGT. 

